Records of the Geological Survey of India, Volume 126, Parts 4-6The Survey, 1993 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 26
... type . Two types of biotite occur ( i ) a green variety having dark green to colourless pleochroism ( ferrian biotite ) and ( 2 ) a brown variety which is pleochroic from reddish brown / dark brown to pale yellow / straw yellow ( Fe ...
... type . Two types of biotite occur ( i ) a green variety having dark green to colourless pleochroism ( ferrian biotite ) and ( 2 ) a brown variety which is pleochroic from reddish brown / dark brown to pale yellow / straw yellow ( Fe ...
Page 133
... types including the pink granite along WNW - ESE and NE - SW directions . Further , minor sheared fine - grained basaltic dykes are also seen . The foliation trend of the rock types varies from N20 ° to 40 ° E - S20 ° to 40 ° W with ...
... types including the pink granite along WNW - ESE and NE - SW directions . Further , minor sheared fine - grained basaltic dykes are also seen . The foliation trend of the rock types varies from N20 ° to 40 ° E - S20 ° to 40 ° W with ...
Page 177
... types which constitute the Vayanad schist complex occur as resister bands , lenses and layers of schists amidst the later gneisses represented by quartzo - feldspathic gneiss , biotite granite gneiss , granite and charnockite . The ...
... types which constitute the Vayanad schist complex occur as resister bands , lenses and layers of schists amidst the later gneisses represented by quartzo - feldspathic gneiss , biotite granite gneiss , granite and charnockite . The ...
Contents
Arunachal Pradesh | 1 |
Mineral InvestigationII Arunachal Pradesh | 9 |
Geology of parts of Karbi Anglong North Cachar Hills and Nowgaon | 15 |
Copyright | |
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acid amphibolite ANDHRA PRADESH bands basalt biotite biotite gneiss block boreholes charnockite chert complex dam axis Deccan Trap depth DISTRICT dolerite dolomite drilling enclaves ENE-WSW Engineering Geology Division exposed feldspar field season flows folds foliation Formation gabbro geochemical GEOLOGICAL MAP Geophysical GEOTECHNICAL INVESTIGATIONS gneiss gneissic gold grained granite granite gneiss granitoids granulite grey Group hornblende INDEX indicated intrusives joints KARNATAKA kimberlite limestone lineament located mafic magnetic magnetite Maharashtra metabasalt migmatite mineral mineralised zone Nagpur Narmada NE-SW NNE-SSW NNW-SSE NW-SE occur pegmatite pink granite plagioclase porphyritic power house PRADESH Code pyrite pyroxene pyroxenite quartz quartz veins quartzite Regional Geology Division reservoir rhyolite river Sakoli samples sandstone scale schist schist belt schistose sediments shale shear zone slope soil Sp Sp spillway sq km strike length structures studies sulphide surveys syenite thick toposheet traverses trench trending tunnel ultramafic upto valley volcanics width Δ Δ Δ